Traits taxon details
original description
(of Endothyra perfida Lebedeva, 1954 †) Lebedeva, N. S. (1954). Фораминиферы нижнего карбона Кузнецкого бассейна - Early Carboniferous Foraminifera of the Kuznetsk Basin. <em>Микрофауна СССР - Mikrofauna SSSR, Trudy Vsesoyuznogo Nauchno-Issledovatel'skogo Geologorazvedochnogo Instituta VNIGRI.</em> 7(81): 237-295., available online at https://books.google.pt/books?id=wPtES5YXhX0C [details] Available for editors 
original description
(of Endothyra perfida var. perfida Lebedeva, 1954 †) Lebedeva, N. S. (1954). Фораминиферы нижнего карбона Кузнецкого бассейна - Early Carboniferous Foraminifera of the Kuznetsk Basin. <em>Микрофауна СССР - Mikrofauna SSSR, Trudy Vsesoyuznogo Nauchno-Issledovatel'skogo Geologorazvedochnogo Instituta VNIGRI.</em> 7(81): 237-295., available online at https://books.google.pt/books?id=wPtES5YXhX0C [details] Available for editors 
new combination reference
Kobayashi, F.; Vachard, D. (2022). Carboniferous foraminifers and biostratigraphy of lower Akiyoshi Limestone (Japan). <em>Revue de Paléobiologie.</em> 41(2): 99-239., available online at https://doi.org/10.5281/zenodo.6858352 [details] Available for editors 
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